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Archive for April, 2010

As if everyone isn't already tired of this debate (one which will never be satisfactorily settled, I'm sure), here's a final note on who contributed the most to the 1995 Rockets' offense during the playoffs, Hakeem Olajuwon (mega-high usage, average efficiency) or Clyde Drexler (mid-to-high usage, mega-high efficiency)...

My last post attempted to create a simple model of team offensive efficiency using Dean Oliver's Offensive Rating, Possession %, and what Dean called "Skill Curves", or the relationship between changes in individual usage and efficiency rates. In general, both Oliver and Eli Witus found a quantifiable inverse relationship between increases in usage and predicted offensive efficiency -- in other words, there's diminishing returns to increasing your usage, and as you add more usage you become less and less efficient (which only makes sense to anyone who's ever played basketball).

Over in the comments of an earlier post about the 1990s Knicks, a discussion is raging about who the best player on the 1995 Houston Rockets was -- Hakeem Olajuwon, or his old college teammate Clyde Drexler? At the core of the back-and-forth is whether Drexler's 120.1 offensive rating (using 23.8% of Houston's possessions when on the court) was more vital to the offense than Hakeem's 109.8 ORtg (using 34.1% of possessions when in the game)... In other words, the old usage-efficiency debate. On one side, Drexler clearly contributed more points per possession to the Rockets' effort than Olajuwon -- but on the other side, Hakeem had to create offense on a significantly higher % of the Rockets' possessions than Clyde, and if you subscribe to "skill curve" theory, this means Clyde's ORtg was artificially enhanced by the extra defensive attention Hakeem drew -- as well as the fact that his shot selection didn't have to include the offense's toughest shots, which were presumably going to Hakeem (at least in a larger proportion), in turn dragging down Hakeem's ORtg.

Of course, those 5 aren't the only journeymen who deserve "preservation status" on a site like Facebook. Brent asked, "What groups would you propose be amended to this list? Those that you personally know of or would like to create?" Bill Wennington came to mind (the Greg Kite of his era?), but I think I'm going to open this one up to the readers... For which historical bench players would you create a social media group whose membership numbers are completely disproportionate to the player's talent level?

On the eve of the 2010 Playoffs, I thought it'd be cool to run down the current list of winningest NBA "people" -- players and coaches. We know which coaches coached which games, so we can give them accurate credit for W-L records, but if you recall for players, we have to estimate the team's W-L record for games in which they appeared. Fortunately, this is pretty easy and a pretty decent kludge: take the team's winning percentage in all games (in this case, all playoff games in a season) and multiply by the player's games played for wins, then subtract that from his games for losses. This isn't perfect, but in the absence of pre-1991 playoff gamelogs, it's the best we can do (and it's pretty darned accurate for such a simple solution). With the explanation out of the way, here are the winningest playoff "people" of all time: